HealthAssure
HealthAssureGood Life
LOINCActiveBoth

LOINC Code 31793-3: Cryptosporidium sp Ag Qn (Stl)

31793-3 is a LOINC code used to identify Cryptosporidium sp Ag Qn (Stl) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Cryptosporidium sp Ag. It is commonly used with the system or sample type Stool.

Reviewed by HealthAssure Clinical TeamUpdated 25 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Cryptosporidium sp Ag. It is commonly used with the system or sample type Stool.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Both

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Cryptosporidium sp Ag [Units/volume] in Stool
  • Cryptosporidium sp Ag
  • Antigen; Antigens; Arbitrary concentration; Bowel movement; Crypt; Crypto; Cryptosporidiosis; Faecal; Faeces; Fecal; Feces; Gastro; Gastroenterology; GI; ID; Infectious Disease; InfectiousDisease; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; species; spp; Stl; Stool = Fecal

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Cryptosporidium sp Ag Qn (Stl)Cryptosporidium sp Ag [Units/volume] in StoolCryptosp Ag Stl-aCncCryptosporidium sp AgMICROCryptosporidium sp antigen, StoolACnc

Frequently asked questions

Code details

Code31793-3
SystemLOINC
Display nameCryptosporidium sp Ag Qn (Stl)
DescriptionCryptosporidium sp Ag
Short nameCryptosp Ag Stl-aCnc
ComponentCryptosporidium sp Ag
PropertyACnc
TimingPt
System (specimen)Stool
ScaleQn
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.07
Last changed2.69

Consumer names

Cryptosporidium sp antigen, Stool

Part names

Cryptosporidium sp AgACncPtStoolQnArbitrary ConcentrationPoint in time (spot)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.